<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Windows</title>

    <script type="text/javascript">
        //<![CDATA[
        window.onload = function() {
            var optionString = prompt("Enter your option string", "");
            optionString = optionString ? optionString : "";

            window.open("http://burningbird.net", "test", optionString);
        }
        
        //]]>
    </script>
</head>
<body>
    <p>some content</p>
</body>
</html>
